http - set frontend_ip as source IP for backend -


i have server multiple ip configured on ( virtual ip on eth0). i'm using haproxy load balacing. each ip has been configured/pointed different domain name , requests comes each ip address being forwarded different backend server using haproxy.

issue here, outgoing traffic haproxy pass through main interface ip [ default]. wanted set source ip backend connection.

i tried below config, not working. idea ?

backend  web1        server ss2 10.11.12.13:80 source ${frontend_ip}   frontend new1        bind 10.11.13.15:8080        mode tcp        use_backend web1

you have 1 ip in question can't sure. if have multiple virtual ips , want serve different backends, need create 1 frontend each @ least. this:

frontend new1     bind 10.11.13.15:80     ...     acl is_new1domain hdr(host) -i new1.domain.com     use_backend web1 if is_new1domain  frontend new2     bind 10.11.13.16:80     ...     acl is_new2domain hdr(host) -i new2.domain.com     use_backend web2 if is_new2domain  backend web1     ...     source 10.124.13.15  backend web2     ...     source 10.124.13.16

actually, if don't have other rules parse, use layer4 proxy/balance. this:

listen new1     bind 10.11.12.15:80     server ss1 10.11.12.90:8080 check     server ss2 10.11.12.91:8080 check     server ss3 10.11.12.92:8080 check     source 10.124.12.15  listen new2     bind 10.11.12.16:80     server ss4 10.11.12.80:8080 check     server ss5 10.11.12.81:8080 check     server ss6 10.11.12.82:8080 check     source 10.124.12.16

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